The Pin-Rivet, cataloged under National Stock Number 5320-01-590-4753, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-590-4753 |
| Primary Part Number | HL646LL-12-15 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.374 INCHES NOMINAL IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Head Height | 0.135 INCHES NOMINAL IN |
| Fastener Length | 1.482 INCHES NOMINAL IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | STRAIGHT PAN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Grip Length | 0.937 INCHES NOMINAL IN |
| Width Between Flats | 0.207 INCHES NOMINAL IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.565 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HL646LL-12-15 PRIMARY | Huck International, Inc (USA) |
| HL646LL-12-15 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL646LL-12-15 | West Coast Aerospace, Inc. (USA) |
| HL646LL-12-15 PRIMARY | Hi-Shear Corporation (USA) |
| HL646LL-12-15 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL646LL-12-15 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HL646LL-12-15 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-590-4753 is a Pin-Rivet, manufactured by Huck International, Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-590-4753 has 6 manufacturer part numbers on file: HL646LL-12-15 (Huck International, Inc), HL646LL-12-15 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL646LL-12-15 (West Coast Aerospace, Inc.), HL646LL-12-15 (Hi-Shear Corporation), HL646LL-12-15 (Sps Technologies, Llc Dba PB Fasteners) and 1 more.
Key specifications for HL646LL-12-15: Shank Diameter: 0.374 INCHES NOMINAL IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Head Height: 0.135 INCHES NOMINAL IN; Fastener Length: 1.482 INCHES NOMINAL IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.